Method of making jacketed vessels, particularly steam-jacketed boiling pans



May 17, 1938. N. E. RAMBUsH ET AL 2,117,500 METHOD OF KING JACKETED VESSELS, PARTICULARLY AM-JACKETED BOILING -PANS Filed April 1, 1935 @7; ,LQ/L

o 5 A. \\\\\\\\\\\\\\\\\\\\\\\f\\\% Patented May 17, 1938 UNITED STATES PATENT OFFICE METHOD 0F MAKING JACKETED VESSELS,

PARTICULARLY STEAM-JACKETED BOIL- ING PAN S Niels Edward Rambush and Philip Arthur Andrews, Stockton-on'Tees, England Application April 1, 1935, Serial No. 14,174 In Great Britain June 6, 1934 4 Claims.

The present invention relates to improvements in jacketed vessels, and is particularly adapted to vessels having a steam jacket liable to external pressure on the inner shell, such for instance as steam-jacketed boiling pans.

Vessels of this type have usually been stayed by stays riveted or bolted to the internal and external shells, which has involved perforation of the inner shell. Difficulty has been experienced in obtaining iluid tightness with such stays unless the plates have been made 'considerably thicker than otherwise necessary.

According to the present invention the internal and external Walls of a doubled Wall vessel are stayed together by meansl of tubular stub stays Welded to the surface of one of said walls which enables the stay to be positioned and welded to the inner Wall after the outer shell and inner shell have been assembled and positioned.

These tubular stub stays may be of any desired section. 'I'hey are however, preferably of such size that they can be Welded first to the outer Wall and then to the inner Wall if that be desired, or

vice Versa.

The invention is more particularly described with reference to the accompanying drawing in Which:-

Figure 1 is aside elevation of part of a steam jacketed vessel.

Figure 2 is a detail.

Figures 3 and 4 show the invention applied to modified forms of construction.

The internal Wall l of a vessel which may be Welded or otherwise secured to the base 2 and cover 3 has a steam jacket formed by an external shell i having holes or perforations Within it-at suitably spaced points to receive hollow stays 5, usually of circular cross-section, which are welded as at S to the internal shell l, and may be riveted or otherwise secured to the external shell 4, but are preferably Welded thereto as shown at 1. By this means it will be seen that a very strong structure is obtained giving high resistance in the shell against collapse due to the steam pressure in the space between inner and outer shells, Whilst the staying avoids leakage from the steam space to the inner vessel, Whereas any leakage from the outer shell is immediately visible. Moreover, as there is no drilling or punching of the internal shell, the difiiculty is avoided of exact register of such holes in the outer and inner shells to receive the strengthening stays.

yIt is obvious that the improvements of the present invention are applicable to any doubled wall vessel irrespective of its type or the form of its base and covers or end surfaces. By Way of example Figure 3 shows the application to a jacketed vessel having a domed end and Figure 4 to a vessel having a flat end and double Walled throughout.

We declare that what We claim isz- 1. The method of securing a jacket to a vessel having an imperforate Wall which consists in mounting outside of said imperforate wall a shell having perforations therein, thereafter disposing tubular studs in said perforations in contact with the exterior of said imperforate Wall, and welding said tubular studs to said imperforate Wall through the interiors of said tubularstuds and securing said tubular studs to said shell.

2. The method of mounting a jacketing shell upon a vessel having an imperforate Wall Which consists in mounting said jacketing shell outside of said vessel, disposing tubular studs in perforations in said jacketing shell and in contact With said imperforate Wall after said shell has been positioned relative to said Wall, Welding said tubular studs to said imperforate Wall through the interiors of said tubular studs and securing said studs to said jacketing shell.

3. 'Ihe method of mounting a jacketing shell upon a vessel having an imperforate Wall which consists in mounting said jacketing shell outside of said Vessel, disposing tubular studs in perforations in said jacketing shell and in contact with said imperforate wall after said shell has been positioned relative to said Wall, welding said tubular studs to said imperforate wall by depositing Welding material interiorly of said studs and securing said studs to said jacketing shell.

4. An assembly for a jacketed vessel comprising a, receptacle having an imperforate liquid retaining Wall and a shell in jacketing relationship with said imperforate Wall, said shell having perforations therein and tubular studs disposed in said perforations and adapted to be Welded to the exterior of said imperforate Wall by means of Welding material disposed interiorly of said studs, said studs being adapted to be secured to said jacketing shell.

NIELS EDWARD RAMBUSH. PHILIP ARTHUR ANDREWS. 

